Stereotyper s matrix and vertical mold for casting stereotype-plates



, 1.1. B. HARRIS. SIEREOTYPERS MATRIX AND VERTICAL MOLD FOR CAS'HNGSTEREOTYPE PLATES FROM IT. APPLiCATlON FILED 1AN.9. l9l3- RENEWED JAN.l4, I919- 1 3 1 3, 6 32 Patented Aug. 19, 1919.

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UNITED STATES PATENT OFFICE.

JOHN JAMES BISHOP HARRIS, F BROADHEATH, ENGLAND, ASSIG-NOR, BY MESNEASSIGNMENTS, TO WOOD NEWSPAPER MACHINERY CORPORATION, OF NEW YORK, N.Y., A. CORPORATION OF VIRGINIA. j

STEREOTYPERS MATRIX AND VERTICAL MOLD FOR. CASTING sirnnEoTYrn-rm'rns 1FROM IT.)

Patel l dAug. 19, 1919. 1

Application filed January 9, 1913, SerialNo. 740,951. Renewed January14, 1919. Serial No. 271,163.

- To all whom it may concern:

Be it known that LYJOHN JAMES BIsHoP HARRIS, a subjectof the King of theUnited Kingdom of Great Britain and Ireland, re-

siding at Linotype and Machinery Works, Broadheath, in the county ofChester, England, have invented new and useful Ime provements inStereotypers Matrices and Vertical Molds for Casting Stereotype- Platesfrom Them, ofwhich the following is a specification.

In some vertical molds for casting curved stereotyped plates, soarranged that the molten metal is poured downward into them throughtheir open tops, the top margin of the matrix is safeguarded from themetal by a metal guard attached to the matrix clamping members of whichthere is one on each side of the matrix supporting member of the mold,and which guard fits over the said margin and extends downward as far asthe top bolster of the matrix, this bolster projecting into the moldbeyond the said guard. Consequently, this guard leaves the bolsterexposed to the impact of the falling stream of metal. is poured from apoint over the median vertical line of the mold, it strikes the middleof the bolster, and lastly, the middle of the matrix. The impact of themetal upon the bolster and matrix makes both gradually creep down thematrix holding members, thereby (seeing that the bottom of the matrix isprevented by the bottom of the mold from creeping downward) forming aprojection on the casting face of the matrix. This projection projectsinto the mold far enough to spoil all the stereotype plates subsequentlycast while it is there.

The present invention consists in means for preventing the saidcreeping. These means are illustrated in the accompanying drawings inwhich Figure 1 is a sectional elevation of a chase, form, and flongillustrating the formation of the improvement in the matrix.

Fig. 2 is a sectional elevation through a vertical mold showing thematrix guarded from being made to creep; and, Fig. 3 is a similar view,enlarged, of a modification.

Referring more particularly to Fig. 1, the improved matrix 1 has threeangled shoulders 2, 3, 4 between its casting face of the matrix is made.3 j j Referring to Fig. 2, '11 is. th usual ld As the latter 5 and itstop margin 'To properly produce these shoulders 2, 3, 4:, thecorresponding end 7 of the chase is for-the major part,

higher than the top ofthe' form 8, and between this higher partand theform, there is asink 9 in which the top bolster 10 in whichthestereotype platesare cast "between 12, the convex member and 13, theconcave member. It is the latter that has the matrix carrying membersabove mentioned thereby constituting it the matrix supporting member. 11 is a recess formed in the upper portion of'the-concave face of themember 13. This recess extends from one side to the other of-the saidmember therefore, nearly flush with .the bolster.

Obviously, when its bottom edge is vertically flush with the moldwardprojection of the bolster 10, the main body of the falling metal will beshot off in the direction of the mold member 12, and thereby preventedfrom striking the bolster. The impact of the metal upon the bolster 10and the matrix below it, cannot cause the creeping above mentioned, forthe reason that the shoulder 15 keeps the bolster 10 in its normalposition and thereby prevents the matrix below it being made to projectinto the mold 11.

The invention includes the combination of a guard 160, Fig. 3, a concavemember 130 and convex member 120, as used here tofore, 210., not havingthe recess 14 and consequent shoulder 15; and a matrix of any contour inrespect of. its top bolster, margin, or shoulders.

Although I have illustrated and described only two forms of theinvention, 1 am aware of the fact that many other modifications can bemade therein without departing from the scope of the invention asexpressed in the claims. Therefore, I do not wish to be limited to allthe details of construction to receive the entire top margin of the xherein shown and described, but what Ido claim 1s:'

1. As an article of manufacture, a vertical stereotype mold having amatrix'provided with a top bolster and a guard arranged in position inthe mouth of themold to engage said bolster and direct the falling metalfrom the top side of said bolster as the metal'descends in the mold. V I

2. As an artlcle ofmanufacture, a stereotype mold having an open mouthat the topv falling metal away from the bolster, the wall .of .said moldhaving means for preventing the-bolster from descendingin the mold.

3. As an article of manufacture, a stereotype mold provided with amatrix therein having a bolster and a top margin, the top of said moldbeing provided witha projection behind the bolster for preventing thebolster being forced clownalongthe mold .wall by the descent of metalupon itsouter facep:

i 4. As an article of manufacture, a stereotype mold having an inwardlyprojecting shoulder in position to engage under the top shoulder of thematrix for reventin the descent of the matrix in the mold.

' '5. As an article of manufacture, a curved stereotype mold having theconvex member thereof provided with a square shoulder projecting towardthematrix: in position to engage the bolster thereof and hold the samerigidly.

6. The combination with a stereotype mold having a recess in the pouringmouth thereof and provided with a square shoulder projecting inwardly atthe bottom of said recess, of a matrix therefor provided with an insettop margin for fitting in said recess and with a bolster extendinginwardly from the bottom of said margin, then downwardly and outwardlyat the bottom to form a top shoulder in position to rest on saidshoulder.

' 7 The combination with a stereotype mold having a mold cavity at thebottom, a recess in the pouring mouth depressed beyond the surfaceofsaidcavity, and a sharp shoulder at the bottoin of said; recess, of amatrix thereforvhaving three angled shoulders, the middle one of Whichregisters with the shoulder on the mold and provided with a top marginoff-set fromthe main surface to the matrix to fit in said recess.

8. As an article of manufacture, a stereotype matrix having a top marginoifset into a difierent plane from that of the body of the matrix, abolster connected to this top margin by a pair of reverse shoulders andconnected with the casting face by a third shoulder.

, In witness whereof I have hereunto set my hand in the presence of twowitnesses.

JOHN JAMES BISHOP HARRIS.

.Witnesses:

i HAROLD SoU'rHwoRTH,

J AMES HENRY PEARSON.

Copies of this pat ent may be obtained tornve cents each, by addressingthe Commissioner of Patents, v I

. Washington, 20.0. I 1

